/*
 *
 * PlaceholderAPI
 * Copyright (C) 2019 Ryan McCarthy
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 *
 */
package me.clip.placeholderapi.commands;

import me.clip.placeholderapi.PlaceholderAPI;
import me.clip.placeholderapi.PlaceholderAPIPlugin;
import me.clip.placeholderapi.expansion.PlaceholderExpansion;
import me.clip.placeholderapi.util.Msg;
import org.apache.commons.lang.StringUtils;
import org.bukkit.Bukkit;
import org.bukkit.OfflinePlayer;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import java.util.Set;
import java.util.stream.Collectors;

public class PlaceholderAPICommands implements CommandExecutor {

  private final PlaceholderAPIPlugin plugin;
  private final CommandExecutor eCloud;

  public PlaceholderAPICommands(PlaceholderAPIPlugin i) {
    plugin = i;
    eCloud = new ExpansionCloudCommands(i);
  }

  @Override
  public boolean onCommand(CommandSender s, Command c, String label, String[] args) {
    if (args.length == 0) {

      Msg.msg(s, "PlaceholderAPI &7version &b&o" + plugin.getDescription().getVersion(),
          "&fCreated by&7: &b" + plugin.getDescription().getAuthors(),
              "&fPapi commands: &b/papi help",
              "&fEcloud commands: &b/papi ecloud");

      return true;
    } else {
      if (args[0].equalsIgnoreCase("help")) {

        Msg.msg(s, "PlaceholderAPI &aHelp &e(&f" + plugin.getDescription().getVersion() + "&e)",
            "&b/papi",
            "&fView plugin info/version info",
            "&b/papi list",
            "&fList all placeholder expansions that are currently active",
            "&b/papi info <placeholder name>",
            "&fView information for a specific expansion",
            "&b/papi parse <(playername)/me> <...args>",
            "&fParse a String with placeholders",
            "&b/papi bcparse <(playername)/me> <...args>",
            "&fParse a String with placeholders and broadcast the message",
            "&b/papi parserel <player one> <player two> <...args>",
            "&fParse a String with relational placeholders",
            "&b/papi register <fileName>",
            "&fRegister an expansion by the name of the file",
            "&b/papi unregister <Expansion name>",
            "&fUnregister an expansion by name",
            "&b/papi reload",
            "&fReload the config settings");

        if (s.hasPermission("placeholderapi.ecloud")) {
          if (plugin.getExpansionCloud() == null) {
            Msg.msg(s, "&b/papi enablecloud",
                "&fEnable the expansion cloud");
          } else {
            Msg.msg(s, "&b/papi disablecloud",
                "&fDisable the expansion cloud",
                "&b/papi ecloud",
                "&fView ecloud command usage");
          }
        }

        return true;
      } else if (args[0].equalsIgnoreCase("ecloud")) {
        if (!s.hasPermission("placeholderapi.ecloud")) {
          Msg.msg(s, "&cYou don't have permission to do that!");

          return true;
        }

        if (plugin.getExpansionCloud() == null) {
          Msg.msg(s, "&7The expansion cloud is not enabled!");

          return true;
        }

        return eCloud.onCommand(s, c, label, args);
      } else if (args[0].equalsIgnoreCase("enablecloud")) {
        if (!s.hasPermission("placeholderapi.ecloud")) {
          Msg.msg(s, "&cYou don't have permission to do that!");

          return true;
        }

        if (plugin.getExpansionCloud() != null) {
          Msg.msg(s, "&7The cloud is already enabled!");

          return true;
        }

        plugin.enableCloud();
        plugin.getPlaceholderAPIConfig().setCloudEnabled(true);
        Msg.msg(s, "&aThe cloud has been enabled!");

        return true;
      } else if (args[0].equalsIgnoreCase("disablecloud")) {
        if (!s.hasPermission("placeholderapi.ecloud")) {
          Msg.msg(s, "&cYou don't have permission to do that!");

          return true;
        }

        if (plugin.getExpansionCloud() == null) {
          Msg.msg(s, "&7The cloud is already disabled!");

          return true;
        }

        plugin.disableCloud();
        plugin.getPlaceholderAPIConfig().setCloudEnabled(false);
        Msg.msg(s, "&aThe cloud has been disabled!");

        return true;
      } else if (args.length > 1 && args[0].equalsIgnoreCase("info")) {
        if (!s.hasPermission("placeholderapi.info")) {
          Msg.msg(s, "&cYou don't have permission to do that!");

          return true;
        }

        PlaceholderExpansion ex = plugin.getExpansionManager().getRegisteredExpansion(args[1]);
        if (ex == null) {
          Msg.msg(s, "&cThere is no expansion loaded with the identifier: &f" + args[1]);

          return true;
        }

        Msg.msg(s, "&7Placeholder expansion info for: &f" + ex.getName());
        Msg.msg(s, "&7Status: " + (ex.isRegistered() ? "&aRegistered" : "&cNot registered"));

        if (ex.getAuthor() != null) {
          Msg.msg(s, "&7Created by: &f" + ex.getAuthor());
        }

        if (ex.getVersion() != null) {
          Msg.msg(s, "&7Version: &f" + ex.getVersion());
        }

        if (ex.getRequiredPlugin() != null) {
          Msg.msg(s, "&7Requires plugin: &f" + ex.getRequiredPlugin());
        }

        if (ex.getPlaceholders() != null) {
          Msg.msg(s, "&8&m-- &r&7Placeholders &8&m--");

          for (String placeholder : ex.getPlaceholders()) {
            Msg.msg(s, placeholder);
          }
        }

        return true;
      } else if (args.length > 2 && args[0].equalsIgnoreCase("parse")
          || args.length > 2 && args[0].equalsIgnoreCase("bcparse")) {

        if (!s.hasPermission("placeholderapi.parse")) {
          Msg.msg(s, "&cYou don't have permission to do that!");

          return true;
        }

        OfflinePlayer pl;

        if (args[1].equalsIgnoreCase("me")) {
          if (s instanceof Player) {
            pl = (Player) s;
          } else {
            Msg.msg(s, "&cThis command must target a player when used by console");

            return true;
          }
        } else {
          if (Bukkit.getPlayer(args[1]) != null) {
            pl = Bukkit.getPlayer(args[1]);
          } else {
            pl = Bukkit.getOfflinePlayer(args[1]);
          }
        }

        if (pl == null || !pl.hasPlayedBefore()) {
          Msg.msg(s, "&cFailed to find player: &f" + args[1]);
          return true;
        }

        String parse = StringUtils.join(args, " ", 2, args.length);

        if (args[0].equalsIgnoreCase("bcparse")) {
          Msg.broadcast("&r" + PlaceholderAPI.setPlaceholders(pl, parse));
        } else {
          Msg.msg(s, "&r" + PlaceholderAPI.setPlaceholders(pl, parse));
        }

        return true;
      } else if (args.length > 3 && args[0].equalsIgnoreCase("parserel")) {
        if (!(s instanceof Player)) {
          Msg.msg(s, "&cThis command can only be used in game!");

          return true;
        } else {
          if (!s.hasPermission("placeholderapi.parse")) {
            Msg.msg(s, "&cYou don't have permission to do that!");

            return true;
          }
        }
        Player one = Bukkit.getPlayer(args[1]);
        if (one == null) {
          Msg.msg(s, args[1] + " &cis not online!");

          return true;
        }

        Player two = Bukkit.getPlayer(args[2]);
        if (two == null) {
          Msg.msg(s, args[2] + " &cis not online!");

          return true;
        }

        String parse = StringUtils.join(args, " ", 3, args.length);
        Msg.msg(s, "&r" + PlaceholderAPI.setRelationalPlaceholders(one, two, parse));

        return true;
      } else if (args[0].equalsIgnoreCase("reload")) {
        if (s instanceof Player) {
          if (!s.hasPermission("placeholderapi.reload")) {
            Msg.msg(s, "&cYou don't have permission to do that!");

            return true;
          }
        }

        Msg.msg(s, "&fPlaceholder&7API &bconfiguration reloaded!");
        plugin.reloadConf(s);
      } else if (args[0].equalsIgnoreCase("list")) {
        if (s instanceof Player) {
          if (!s.hasPermission("placeholderapi.list")) {
            Msg.msg(s, "&cYou don't have permission to do that!");

            return true;
          }
        }

        Set<String> registered = PlaceholderAPI.getRegisteredIdentifiers();
        if (registered.isEmpty()) {
          Msg.msg(s, "&7There are no placeholder hooks currently registered!");

          return true;
        }

        Msg.msg(s, registered.size() + " &7Placeholder hooks registered:");
        Msg.msg(s, registered.stream().sorted().collect(Collectors.joining(", ")));
      } else if (args.length > 1 && args[0].equalsIgnoreCase("register")) {
        if (s instanceof Player) {
          if (!s.hasPermission("placeholderapi.register")) {
            Msg.msg(s, "&cYou don't have permission to do that!");

            return true;
          }
        }

        String fileName = args[1].replace(".jar", "");
        PlaceholderExpansion ex = plugin.getExpansionManager().registerExpansion(fileName);

        if (ex == null) {
          Msg.msg(s, "&cFailed to register expansion from " + fileName);

          return true;
        }

        Msg.msg(s, "&aSuccessfully registered expansion: &f" + ex.getName());
      } else if (args.length > 1 && args[0].equalsIgnoreCase("unregister")) {

        if (s instanceof Player) {
          if (!s.hasPermission("placeholderapi.register")) {
            Msg.msg(s, "&cYou don't have permission to do that!");

            return true;
          }
        }

        PlaceholderExpansion ex = plugin.getExpansionManager().getRegisteredExpansion(args[1]);
        if (ex == null) {
          Msg.msg(s, "&cFailed to find expansion: &f" + args[1]);

          return true;
        }

        if (PlaceholderAPI.unregisterExpansion(ex)) {
          Msg.msg(s, "&aSuccessfully unregistered expansion: &f" + ex.getName());
        } else {
          Msg.msg(s, "&cFailed to unregister expansion: &f" + ex.getName());
        }

      } else {
        Msg.msg(s, "&cIncorrect usage! &7/papi help");
      }
    }

    return true;
  }

}
